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<?php
/*--------------------------------------------------------------------------+
This file is part of eStudy.
messaging/classes/class.messagingautomation.inc.php
- Modulgruppe:  Messaging
- Beschreibung: Automation des loeschens von alten Nachrichten
- Version:      0.2, 09/09/04
- Autor(en):    Waldemar Krampetz <waldemar.krampetz@mni.fh-giessen.de>,
Dennis Bayer <dennis.bayer@mni.fh-giessen.de><bayer.d@gmx.de>
+---------------------------------------------------------------------------+
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or any later version.
+---------------------------------------------------------------------------+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+--------------------------------------------------------------------------*/
require_once (PATH_TO_ROOT."common/classes/class.modulautomation.inc.php");
require_once (PATH_TO_ROOT."roleplay/classes/class.roleartefacts.inc.php");
class MessagingAutomation extends ModulAutomation {
    function MessagingAutomation() {
        parent::ModulAutomation();
        $this->info = "Private Nachrichten";
        $this->necessaryDatabaseTable = "messaging_inbox";
    }
    function dailyWork() {
        global $db, $EZSQL_ERROR, $settings;
        if ($settings["pm_days_to_delete_messages"] > 0) {
            $time = time() -($settings["pm_days_to_delete_messages"]*24*3600);
            //Loeschen der gelesenen Nachrichten, die nicht archiviert und aelter als der eingestellte Zeitraum sind
            $errorCount = count($EZSQL_ERROR);
            $toDelete = $db->get_col("SELECT ID FROM messaging_inbox WHERE date < $time AND isRead = 1 AND isArchived = 0");
            if (!empty($toDelete)) {
                RoleArtefacts::deleteItem(PM, $toDelete);
                $db->query("DELETE FROM messaging_inbox WHERE date < $time AND isRead = 1 AND isArchived = 0");
            }
            if (count($EZSQL_ERROR) > $errorCount) {
                $this->error("Fehler beim Aufräumen des Posteingangs:\n".print_r($EZSQL_ERROR[$errorCount], true));
            } else {
                $this->writeToLogfile($db->rows_affected." alte empfangene Nachrichten gelöscht.");
            }
            $errorCount = count($EZSQL_ERROR);
            $db->query("DELETE FROM messaging_outbox WHERE date < $time AND isArchived = 0");
            if (count($EZSQL_ERROR) > $errorCount) {
                $this->error("Fehler beim Aufräumen der gesendeten Nachrichten:\n".print_r($EZSQL_ERROR[$errorCount], true));
            } else {
                $this->writeToLogfile($db->rows_affected." alte gesendete Nachrichten gelöscht.");
            }
            if (!empty($this->errorString)) return false;
        }
        return true;
    }
    function deleteUser($userID) {
        global $db, $EZSQL_ERROR;
        $errorCount = count($EZSQL_ERROR);
        $db->query("DELETE FROM messaging_inbox WHERE userID='$userID'");
        if (count($EZSQL_ERROR) > $errorCount) {
            $this->error("Fehler beim Löschen der empfangenen Nachrichten:\n".print_r($EZSQL_ERROR[$errorCount], true));
        } else {
            $this->writeToLogfile($db->rows_affected." empfangene Nachricht(en) gelöscht.");
        }
        $errorCount = count($EZSQL_ERROR);
        $db->query("UPDATE messaging_inbox SET authorID=3 WHERE authorID=".$userID);
        if (count($EZSQL_ERROR) > $errorCount) {
            $this->error("Fehler beim Aktualisieren der empfangenen Nachrichten anderer Benutzer:\n".print_r($EZSQL_ERROR[$errorCount], true));
        } else {
            $this->writeToLogfile($db->rows_affected." empfangene Nachricht(en) anderer Benutzer aktualisiert.");
        }
        $errorCount = count($EZSQL_ERROR);
        $db->query("DELETE FROM messaging_outbox WHERE userID=".$userID);
        if (count($EZSQL_ERROR) > $errorCount) {
            $this->error("Fehler beim Löschen der gesendeten Nachrichten:\n".print_r($EZSQL_ERROR[$errorCount], true));
        } else {
            $this->writeToLogfile($db->rows_affected." gesendete Nachricht(en) gelöscht.");
        }
        $errorCount = count($EZSQL_ERROR);
        $messages = $db->get_results("SELECT ID, recipientID FROM messaging_outbox WHERE recipientID LIKE '%$userID;%'");
        if (count($EZSQL_ERROR) > $errorCount) {
            $this->error("Fehler beim Ermitteln der an den Benutzer gesendeten Nachrichten:\n".print_r($EZSQL_ERROR[$errorCount], true));
        } else {
            $count = 0;
            if ($db->num_rows) {
                foreach($messages as $message) {
                    $recipients = explode(";", $message->recipientID);
                    $count = count($recipients);
                    for ($i = 0 ; $i < $count ; $i++) {
                        if ($recipients[$i] == $userID) {
                            $recipients[$i] = 3;
                        }
                    }
                    $recipients = implode(";", $recipients);
                    if ($recipients != $message->recipientID) {
                        $errorCount = count($EZSQL_ERROR);
                        $db->query("UPDATE messaging_outbox SET recipientID='$recipients' WHERE ID=$message->ID");
                        if (count($EZSQL_ERROR) > $errorCount) {
                            $this->error("Fehler beim Aktualisieren der Nachricht $message->ID:\n".print_r($EZSQL_ERROR[$errorCount], true));
                        } else {
                            $count++;
                        }
                    }
                }
            }
            $this->writeToLogfile("$count gesendete Nachricht(en) aktualisiert.");
        }
        $errorCount = count($EZSQL_ERROR);
        $db->query("DELETE FROM messaging_buddylist WHERE userID=$userID OR buddyID=$userID");
        if (count($EZSQL_ERROR) > $errorCount) {
            $this->error("Fehler beim Löschen der Buddies:\n".print_r($EZSQL_ERROR[$errorCount], true));
        } else {
            $this->writeToLogfile($db->rows_affected." Buddies gelöscht.");
        }
        if (!empty($this->errorString)) return false;
        return true;
    }
}
?>

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